Jim Casto stands up against the tiled river height gauge along the entrance of the floodwall in Huntington, West Virginia. (Credit: Liam Niemeyer, Ohio Valley ReSource)

Rising waters: Aging levees, climate change and the challenge to hold back the Ohio River

Levee systems throughout the Ohio River basin are "high risk" due to the combination of aging infrastructure and the people and property that would be harmed if the system were to fail.

When 78-year-old Jim Casto looks at the towering floodwalls that line downtown Huntington, West Virginia, he sees a dark history of generations past.

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